Device for measuring materials for tooth-fillings.



J. F. FIETSGH.

DEVICE FOR MEASURING MATERIALS FOR TOOTH FILLINGS.

APPLICATION FILED JUNE 23.1913- RENEWED JUNE 19. 1916- 1,295,088Patented Nov. 14, 1916.

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ed to easily and snares mean a Specification of Letters Patent.

Patented Nov. id, 19116.

1 fippllcation filed June23, 1913, Serial No. 775,284. Renewed June 19,1916. Serial No. 10%,573.

I To all whom it concern Be it known that I, J OHN F. Fm'rsorr, acitizen of the United States, residing at Forest? Park, in the county ofCook and have invented a certain new and useful Improvement in Devicesfor Measuring Materials for Tooth-Fillings,

of which the following is a specification.

This invention relates to devices for measuring materials for toothfillings, and has for its object to provide a new and improved device ofthis description, particularly adaptquickly secure the properproportions of the powdered metal and m'ercury in forming amalgamfillings. In order to provide a proper amalgam filling which shall be ofthe proper consistency and have the properlasting qualities, it isnecessary to mix the powdered metal and mercury in j certaindefiniteproportions.

narily done by weighing the materials on an apothecar scale. usuallymust e done after hours, and hence is liable to be omitted, the dentistsguessing at the amounts at the time the filling is made, thereby failingto get the proper results.

The object of my invention is to provide a device by means of which theproper proportions of powdered metal and mercury may be easily andquickly made at the time the amalgam is needed and by means of which theproper amounts may also be easily provided thereby preventing. waste ofma terial. V a

My present invention also adapts'itself to the peculiar characteristicsof the mercury.

The inventionis illustrated in the accompanying drawings wherein-.-

of Fig. 1; Fig. 4lis a view. of the spring and agitating plate for thereceptacle ring in position.

Figure l'is a plan view of one form of device embodying the inventionFig. 2 is a sectional view taken on line 22 of Fig. 1; Fig. 3 is asectional view taken on line 3-3 cover,

containing the powdered material. Fig. 5 is a plan view of the agitatingplate. Fig. 6 is a view showing a split ring ada ted to be used to varythe quantity of material disth charged. Fig. -7 is a view showing thesplit L1ke numerals refer to like parts throughout the several figures.

Referring now to the accompanying drawgs, I have shown the device asconsisting of a body portion 1, made of any suitable This is ordi- Thistakes time and material, but preferably of glass. This body portion isprovided with two receiving openmgs 2 and 3, which form, as it were, tworeceptacles. The receiving opening 2 is for the mercury and thereceiving opening 3 is for the powdered material. The receiving open- 1ng 2.is provided with a covert and the rece1v1ng opemng 3 is providedwith a cover 5. Below the receiving openings 2 and 3 are the'rotatableparts 6 and 7, which extend through holes 8 and 9, these holescommunicating with :the, receiving openings 2 and 3.. The rotatableparts 6 and 7 are provided with one or more openings or pockets 10 whichare adapted to receive a portion ofthe material in the receivingopenings 2 and 3 when opposite said receiving openmgs. Below therotatable parts 6 and 7 are the discharge openings 11 through which thematerials from the receptacles 2 and 3 means is provided for preventingthis. As

hereln shown, I provid e an agitating device 12, by means of which thepowdered material is agitated. This agitating devic'may' be of anydesired construction. Asherein with a series of openings and'a series ofprojecting parts 13, and forming as it were, a also or movabli'eperforated bottom. This dliske is located at the bottom of the receptace A 14 is connected with the cover 5 and its lowerend passes through anopening 15 in the agitating disk. The springis of such lengththat itsend will pro e ct into onecof the pockets 10 of so that when therotatable part 7 is rotated, the spring will be moved to one side as thepocket moves away from beneath the receptacle 3 and will spring back asthe end of the spring pa$es from one pocket to the other, us insuring anagitation of the powdered material at the very bottom of the receptacleand at the point where it passes into the pocket 10, thus ing of eachpocket. The nction of the the rotatablepart 7 shown, it consists of adisk orplateprovided insuring the proper fillbottom. It will be seenthat in-the -operation of the device this spring, as it were,

snaps back suddenly and carries with it this false or movable bottom,which agitates the powdered material and insures its passing into thepocket in the rotatable part. In order to permit the agitating device tobe placed at the bottom of the receptacle 3, I provide the cover 5 withan opening 16 so that the powdered material into the receptacle afterthecover has been placed in position and while the spring is in theopening 15 of the agitating device. This hole is covered up by a clamp17 which fits in grooves 18 of the covers 4 and 5 and which has springends fitting into notches 18 in the body portion 1, said clamp holdingthe covers in position. Some suitable means is provided for holding therotatable parts 6 and 7 against longitudinal movement during theirnormal operation. As

herein shown, the ends of these parts project beyond the body portionand each end is provided with a groove 19. A spring 20 is placed betweenthe two parts, the ends of the spring entering the grooves 19. Thispermits the rotatable parts to be rotated but holds them againstlongitudinal movement. I prefer to provide some means for varying thequantity of material entering the pockets 10 so as to vary the size ofthe charge. As illustrated in Figs. 6 and 7, this result is secured bymeans of a split ring 21 adapted to tightly fit into these openings. Thesplit ring is preferably made of spring material so as to springoutwardly and thus tightly engage the walls of the pocket 10. Thesesplit rings may be of various thicknesses so that difierent ones may beplaced in the pockets to secure difierent charges-of mate rial, thelargest charge being obtained when the split ring is entirely omitted.The split rings are preferably used in connection with the powderedmaterial.

When the device is,used, the mercury is placed in the receptacle 2 andthe powdered alloy in the receptacle 3. Before placing the powderedalloy in the receptacle 3, the cap 5 is placed in position and thespring passed through the opening 15 in the agitating device. Thepowdered material is inserted through the opening 16 and. the clampingde vice is then placed in position. When it is desired to make afilling, the rotatable part 6 is rotated so as to discharge a properamount of mercury. The rotatable part 7 is then rotated so as todischarge a proper amount of powdered material. These materials may bedischarged one after the other so that they may be discharged in thesame receptacle, or one on top' of the other in order to facilitatemixing. When the r0- tatable part 7 is rotated, the agitating device ismoved to agitate the powdered material so as to insure the propermovement thereof in the pocket 10. It will be seen that by means of thisdevice the proper may be inserted quantities can be easily and quicklydischarged from the device so that a filling of the proper consistencycan be easily and quickly made, thus avoiding the necessity of weighingout the'mercury and the powdered material and at the same time securinga uniform mixture at all times when desired.

I claim:

1. A device for measuring powdered material for tooth fillings,comprising a body portion provided with a receptacle for containing saidpowdered material, said receptacle provided with an inclined bottom,said bottom provided near its center with an opening, a rotatable partmounted in an opening in said body portion and provided with a pocketadapted to be moved opposite the opening in the bottom of saidreceptacle, a laterally movable perforated plate located in saidreceptacle, said plate provided with downwardly projecting parts whichengage the inclined portion of said bottom, and means for moving saidplate back andforth across said bottom to agitate said material so as toinsure the proper filling of the pocket in said rotatable part.

2. A device for measuring materials for tooth fillings comprising aunitary body portion provided with two separate receptacles, one for themercury and the other for the powdered material, a part between themintegral with said body portion for preventing material from passingfrom one receptacle to the other, a rotatable part associated with eachreceptacle, said rotatable part having pocketscommunicating with saidreceptacle when in a predetermined position, said body portion having adischarge opening below each of said rotatable parts through which thematerials in said pockets are discharged when the pockets are broughtopposite thereto, and a movable perforated iece associated with thereceptacle containing the powdered material and means for moving saidperforated piece laterally when the rotating part is rotated to agitatesaid 'material so as to insure its passing into the pocket in therotatable part. 7

3. A device for measuring powdered material for tooth fillings,comprising a body portion provided with a receptacle into which thepowdered material is received, the bottom of said receptacle'providedwith an opening through which the material is discharged, the portion ofthe bottom between said opening and the side walls of the receptaclebeing inclined, a perforated piece resting on this inclined portionseats to be located over saidopening, the width of said perforated piecebeing smaller than the distance across said receptacle, a controllingdevice for controlling the discharge of material through said opening,and means actuated by said controlling device for moving said perforatedpiece laterally when the controlling device is operated so as to agitatesaid powdered material.

, from said agitating 4. A device for measuring materials for toothfillings comprising a body portion provided with a receptacle forcontaining the powdered material, a rotatable part associated with saidreceptacle, said rotatable part provided with a pocket adapted tocommunicate with said receptacle when in a predetermined position, alaterally movable piece near the bottom of said receptacle, saidlaterally movable piece provided with a projecting part which holds itaway from the bottom of said receptacle, and means for moving saidlaterally movable part back and forth across the bottom of saidreceptacle.

5. A device for measuring materials for tooth fillings comprising a bodyportion provided with. a receptacle for containing the powderedmaterial, a rotatable part associated with said receptacle, and providedwith a pocket adapted to communicate with said receptacle when in apredetermined position, an agitating device near the bottom of saidreceptacle, a spring piece separate device but movably connectedtherewith said spring piece connectedwith a stationary part, said springpiece adapted to be engaged by said rotatable part to move the agitatingdevice.

6. A device for measuring materials for tooth fillings comprising a bodyportion provided with two receptacles, a rotatable part associated witheach receptacle and containing a pocket adapted to be brought incommunication with said receptacle when the rotatable part is in apredetermined position, and means separate from said body portion forpreventing longitudinal movement of d said rotatable parts said meansconsisting of a piece intermediate the two rotatable parts and engagingboth of them.

7. A device for measuring materials for tooth fillings comprising aunitary body portion provided with two receptacles, a rotatable partassociated with each receptacle and containing a pocket adapted to bebrought in communication with said receptacle when the rotatable part isin a predetermined position, covers for said receptacles and a singleclamp for holding said covers in position.

8. A device for measuring materials for tooth fillings comprising a bodyportion provided with a receptacle, a rotatable part as sociated withsaid receptacle and containing a pocket adapted to be brought incommunication With said receptacle when the rotatable part is in apredetermined position, a cover for said receptacle and a clamp forholding said cover in position, an agitating device in said receptacle,a spring piece connected therewith and connected with the cover of saidreceptacle, said cover provided with an opening through which thematerial is inserted into the receptacle without removing said cover andspring.

9. A device for measuring material for tooth fillings comprising a bodyportion provided with a receptacle, a rotatable part associated withsaid receptacle and containing a pocket adapted to be brought intocommunication with said receptacle when the rotatable part is in apredetermined position, an agitating device loosely held in saidreceptacle, a spring piece having one end fastened to a part above saidagitating device, the other end of the spring piece projecting throughan opening in the agitating device, and engaging said rotatable part,whereby when the. rotatable part is rotated the agitating device ismoved back and forth.

10. A device for measuring materials, comprising a bodyportion providedwith a receptacle, a rotatable part associated with said receptacle andcontaining a pocket adapted to be brought into communication with saidreceptacle when the rotatable part is in a predetermined position, aremovable cover for said receptacle, said cover provided with anopening, through which the material is inserted into the receptacle, anagitating evice loosely held in said receptacle, a spring piececonnected with said cover and projecting through an opening in saidagitating device, the end of said spring piece projecting beyond theagitating device and in position to be engaged by said rotatable part,when rotated.

In testimony whereof I affix my signature in he presence of twowitnesses this 17th day of June, 1913.

JOHN F. FIETSCH.

Witnesses:

HERMAN F. JACOB; W. F. Gnossnn.

